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30502241215 = 531972028749
BaseRepresentation
bin11100011010000100…
…110100001110111111
32220201202100101210121
4130122010310032333
5444432033204330
622002412515411
72126605525645
oct343204641677
986652311717
1030502241215
1111a327a1316
125ab317bb67
132b51453354
141695025195
15bd7c8617a
hex71a1343bf

30502241215 has 16 divisors (see below), whose sum is σ = 38172960000. Its totient is φ = 23371176960.

The previous prime is 30502241213. The next prime is 30502241257. The reversal of 30502241215 is 51214220503.

It is not a de Polignac number, because 30502241215 - 21 = 30502241213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30502241215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30502241213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999340 + ... + 1029409.

It is an arithmetic number, because the mean of its divisors is an integer number (2385810000).

Almost surely, 230502241215 is an apocalyptic number.

30502241215 is a deficient number, since it is larger than the sum of its proper divisors (7670718785).

30502241215 is a wasteful number, since it uses less digits than its factorization.

30502241215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028882.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 30502241215 its reverse (51214220503), we get a palindrome (81716461718).

The spelling of 30502241215 in words is "thirty billion, five hundred two million, two hundred forty-one thousand, two hundred fifteen".

Divisors: 1 5 31 97 155 485 3007 15035 2028749 10143745 62891219 196788653 314456095 983943265 6100448243 30502241215